// 常用工具
export default {
	//dateTimeStamp是一个时间毫秒，注意时间戳是秒的形式，在这个毫秒的基础上除以1000，就是十位数的时间戳。13位数的都是时间毫秒。
	messageTime(dateTimeStamp) { 
		var minute = 1000 * 60; //把分，时，天，周，半个月，一个月用毫秒表示
		var hour = minute * 60;
		var day = hour * 24;
		var week = day * 7;
		var halfamonth = day * 15;
		var month = day * 30;
		var now = new Date().getTime(); //获取当前时间毫秒
		var result = null;
		var diffValue = now - dateTimeStamp; //时间差
	
		if (diffValue < 0) {
			return;
		}
		var minC = diffValue / minute; //计算时间差的分，时，天，周，月
		var hourC = diffValue / hour;
		var dayC = diffValue / day;
		var weekC = diffValue / week;
		var monthC = diffValue / month;
		//此处考虑小数情况，感谢 情非得已https://blog.csdn.net/weixin_48495574 指正
		if (monthC >= 1 && monthC < 4) {
			result = " " + parseInt(monthC) + "月前"
		} else if (weekC >= 1 && weekC < 4) {
			result = " " + parseInt(weekC) + "周前"
		} else if (dayC >= 1 && dayC < 7) {
			result = " " + parseInt(dayC) + "天前"
		} else if (hourC >= 1 && hourC < 24) {
			result = " " + parseInt(hourC) + "小时前"
		} else if (minC >= 1 && minC < 60) {
			result = " " + parseInt(minC) + "分钟前"
		} else if (diffValue >= 0 && diffValue <= minute) {
			result = "刚刚"
		} else {
			var datetime = new Date();
			datetime.setTime(dateTimeStamp);
			var Nyear = datetime.getFullYear();
			var Nmonth = datetime.getMonth() + 1 < 10 ? "0" + (datetime.getMonth() + 1) : datetime.getMonth() + 1;
			var Ndate = datetime.getDate() < 10 ? "0" + datetime.getDate() : datetime.getDate();
			var Nhour = datetime.getHours() < 10 ? "0" + datetime.getHours() : datetime.getHours();
			var Nminute = datetime.getMinutes() < 10 ? "0" + datetime.getMinutes() : datetime.getMinutes();
			var Nsecond = datetime.getSeconds() < 10 ? "0" + datetime.getSeconds() : datetime.getSeconds();
			result = Nyear + "-" + Nmonth + "-" + Ndate
		}
		
		return result;
	}
}
